drivers/net/wireless/p54/fwio.c

   1 /*
   2  * Firmware I/O code for mac80211 Prism54 drivers
   3  *
   4  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   5  * Copyright (c) 2007-2009, Christian Lamparter <chunkeey@web.de>
   6  * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
   7  *
   8  * Based on:
   9  * - the islsm (softmac prism54) driver, which is:
  10  *   Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
  11  * - stlc45xx driver
  12  *   Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License version 2 as
  16  * published by the Free Software Foundation.
  17  */
  18
  19 #include <linux/init.h>
  20 #include <linux/slab.h>
  21 #include <linux/firmware.h>
  22 #include <linux/etherdevice.h>
  23
  24 #include <net/mac80211.h>
  25
  26 #include "p54.h"
  27 #include "eeprom.h"
  28 #include "lmac.h"
  29
  30 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
  31 {
  32         struct p54_common *priv = dev->priv;
  33         struct exp_if *exp_if;
  34         struct bootrec *bootrec;
  35         u32 *data = (u32 *)fw->data;
  36         u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
  37         u8 *fw_version = NULL;
  38         size_t len;
  39         int i;
  40         int maxlen;
  41
  42         if (priv->rx_start)
  43                 return 0;
  44
  45         while (data < end_data && *data)
  46                 data++;
  47
  48         while (data < end_data && !*data)
  49                 data++;
  50
  51         bootrec = (struct bootrec *) data;
  52
  53         while (bootrec->data <= end_data && (bootrec->data +
  54                (len = le32_to_cpu(bootrec->len))) <= end_data) {
  55                 u32 code = le32_to_cpu(bootrec->code);
  56                 switch (code) {
  57                 case BR_CODE_COMPONENT_ID:
  58                         priv->fw_interface = be32_to_cpup((__be32 *)
  59                                              bootrec->data);
  60                         switch (priv->fw_interface) {
  61                         case FW_LM86:
  62                         case FW_LM20:
  63                         case FW_LM87: {
  64                                 char *iftype = (char *)bootrec->data;
  65                                 printk(KERN_INFO "%s: p54 detected a LM%c%c "
  66                                                  "firmware\n",
  67                                         wiphy_name(priv->hw->wiphy),
  68                                         iftype[2], iftype[3]);
  69                                 break;
  70                                 }
  71                         case FW_FMAC:
  72                         default:
  73                                 printk(KERN_ERR "%s: unsupported firmware\n",
  74                                         wiphy_name(priv->hw->wiphy));
  75                                 return -ENODEV;
  76                         }
  77                         break;
  78                 case BR_CODE_COMPONENT_VERSION:
  79                         /* 24 bytes should be enough for all firmwares */
  80                         if (strnlen((unsigned char *) bootrec->data, 24) < 24)
  81                                 fw_version = (unsigned char *) bootrec->data;
  82                         break;
  83                 case BR_CODE_DESCR: {
  84                         struct bootrec_desc *desc =
  85                                 (struct bootrec_desc *)bootrec->data;
  86                         priv->rx_start = le32_to_cpu(desc->rx_start);
  87                         /* FIXME add sanity checking */
  88                         priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
  89                         priv->headroom = desc->headroom;
  90                         priv->tailroom = desc->tailroom;
  91                         priv->privacy_caps = desc->privacy_caps;
  92                         priv->rx_keycache_size = desc->rx_keycache_size;
  93                         if (le32_to_cpu(bootrec->len) == 11)
  94                                 priv->rx_mtu = le16_to_cpu(desc->rx_mtu);
  95                         else
  96                                 priv->rx_mtu = (size_t)
  97                                         0x620 - priv->tx_hdr_len;
  98                         maxlen = priv->tx_hdr_len + /* USB devices */
  99                                  sizeof(struct p54_rx_data) +
 100                                  4 + /* rx alignment */
 101                                  IEEE80211_MAX_FRAG_THRESHOLD;
 102                         if (priv->rx_mtu > maxlen && PAGE_SIZE == 4096) {
 103                                 printk(KERN_INFO "p54: rx_mtu reduced from %d "
 104                                        "to %d\n", priv->rx_mtu, maxlen);
 105                                 priv->rx_mtu = maxlen;
 106                         }
 107                         break;
 108                         }
 109                 case BR_CODE_EXPOSED_IF:
 110                         exp_if = (struct exp_if *) bootrec->data;
 111                         for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
 112                                 if (exp_if[i].if_id == cpu_to_le16(IF_ID_LMAC))
 113                                         priv->fw_var = le16_to_cpu(exp_if[i].variant);
 114                         break;
 115                 case BR_CODE_DEPENDENT_IF:
 116                         break;
 117                 case BR_CODE_END_OF_BRA:
 118                 case LEGACY_BR_CODE_END_OF_BRA:
 119                         end_data = NULL;
 120                         break;
 121                 default:
 122                         break;
 123                 }
 124                 bootrec = (struct bootrec *)&bootrec->data[len];
 125         }
 126
 127         if (fw_version)
 128                 printk(KERN_INFO "%s: FW rev %s - Softmac protocol %x.%x\n",
 129                         wiphy_name(priv->hw->wiphy), fw_version,
 130                         priv->fw_var >> 8, priv->fw_var & 0xff);
 131
 132         if (priv->fw_var < 0x500)
 133                 printk(KERN_INFO "%s: you are using an obsolete firmware. "
 134                        "visit http://wireless.kernel.org/en/users/Drivers/p54 "
 135                        "and grab one for \"kernel >= 2.6.28\"!\n",
 136                         wiphy_name(priv->hw->wiphy));
 137
 138         if (priv->fw_var >= 0x300) {
 139                 /* Firmware supports QoS, use it! */
 140
 141                 if (priv->fw_var >= 0x500) {
 142                         priv->tx_stats[P54_QUEUE_AC_VO].limit = 16;
 143                         priv->tx_stats[P54_QUEUE_AC_VI].limit = 16;
 144                         priv->tx_stats[P54_QUEUE_AC_BE].limit = 16;
 145                         priv->tx_stats[P54_QUEUE_AC_BK].limit = 16;
 146                 } else {
 147                         priv->tx_stats[P54_QUEUE_AC_VO].limit = 3;
 148                         priv->tx_stats[P54_QUEUE_AC_VI].limit = 4;
 149                         priv->tx_stats[P54_QUEUE_AC_BE].limit = 3;
 150                         priv->tx_stats[P54_QUEUE_AC_BK].limit = 2;
 151                 }
 152                 priv->hw->queues = P54_QUEUE_AC_NUM;
 153         }
 154
 155         printk(KERN_INFO "%s: cryptographic accelerator "
 156                "WEP:%s, TKIP:%s, CCMP:%s\n", wiphy_name(priv->hw->wiphy),
 157                 (priv->privacy_caps & BR_DESC_PRIV_CAP_WEP) ? "YES" :
 158                 "no", (priv->privacy_caps & (BR_DESC_PRIV_CAP_TKIP |
 159                 BR_DESC_PRIV_CAP_MICHAEL)) ? "YES" : "no",
 160                 (priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP) ?
 161                 "YES" : "no");
 162
 163         if (priv->rx_keycache_size) {
 164                 /*
 165                  * NOTE:
 166                  *
 167                  * The firmware provides at most 255 (0 - 254) slots
 168                  * for keys which are then used to offload decryption.
 169                  * As a result the 255 entry (aka 0xff) can be used
 170                  * safely by the driver to mark keys that didn't fit
 171                  * into the full cache. This trick saves us from
 172                  * keeping a extra list for uploaded keys.
 173                  */
 174
 175                 priv->used_rxkeys = kzalloc(BITS_TO_LONGS(
 176                         priv->rx_keycache_size), GFP_KERNEL);
 177
 178                 if (!priv->used_rxkeys)
 179                         return -ENOMEM;
 180         }
 181
 182         return 0;
 183 }
 184 EXPORT_SYMBOL_GPL(p54_parse_firmware);
 185
 186 static struct sk_buff *p54_alloc_skb(struct p54_common *priv, u16 hdr_flags,
 187                                      u16 payload_len, u16 type, gfp_t memflags)
 188 {
 189         struct p54_hdr *hdr;
 190         struct sk_buff *skb;
 191         size_t frame_len = sizeof(*hdr) + payload_len;
 192
 193         if (frame_len > P54_MAX_CTRL_FRAME_LEN)
 194                 return NULL;
 195
 196         if (unlikely(skb_queue_len(&priv->tx_pending) > 64))
 197                 return NULL;
 198
 199         skb = __dev_alloc_skb(priv->tx_hdr_len + frame_len, memflags);
 200         if (!skb)
 201                 return NULL;
 202         skb_reserve(skb, priv->tx_hdr_len);
 203
 204         hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
 205         hdr->flags = cpu_to_le16(hdr_flags);
 206         hdr->len = cpu_to_le16(payload_len);
 207         hdr->type = cpu_to_le16(type);
 208         hdr->tries = hdr->rts_tries = 0;
 209         return skb;
 210 }
 211
 212 int p54_download_eeprom(struct p54_common *priv, void *buf,
 213                         u16 offset, u16 len)
 214 {
 215         struct p54_eeprom_lm86 *eeprom_hdr;
 216         struct sk_buff *skb;
 217         size_t eeprom_hdr_size;
 218         int ret = 0;
 219
 220         if (priv->fw_var >= 0x509)
 221                 eeprom_hdr_size = sizeof(*eeprom_hdr);
 222         else
 223                 eeprom_hdr_size = 0x4;
 224
 225         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL, eeprom_hdr_size +
 226                             len, P54_CONTROL_TYPE_EEPROM_READBACK,
 227                             GFP_KERNEL);
 228         if (unlikely(!skb))
 229                 return -ENOMEM;
 230
 231         mutex_lock(&priv->eeprom_mutex);
 232         priv->eeprom = buf;
 233         eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
 234                 eeprom_hdr_size + len);
 235
 236         if (priv->fw_var < 0x509) {
 237                 eeprom_hdr->v1.offset = cpu_to_le16(offset);
 238                 eeprom_hdr->v1.len = cpu_to_le16(len);
 239         } else {
 240                 eeprom_hdr->v2.offset = cpu_to_le32(offset);
 241                 eeprom_hdr->v2.len = cpu_to_le16(len);
 242                 eeprom_hdr->v2.magic2 = 0xf;
 243                 memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
 244         }
 245
 246         p54_tx(priv, skb);
 247
 248         if (!wait_for_completion_interruptible_timeout(
 249              &priv->eeprom_comp, HZ)) {
 250                 printk(KERN_ERR "%s: device does not respond!\n",
 251                        wiphy_name(priv->hw->wiphy));
 252                 ret = -EBUSY;
 253         }
 254         priv->eeprom = NULL;
 255         mutex_unlock(&priv->eeprom_mutex);
 256         return ret;
 257 }
 258
 259 int p54_update_beacon_tim(struct p54_common *priv, u16 aid, bool set)
 260 {
 261         struct sk_buff *skb;
 262         struct p54_tim *tim;
 263
 264         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*tim),
 265                             P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
 266         if (unlikely(!skb))
 267                 return -ENOMEM;
 268
 269         tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
 270         tim->count = 1;
 271         tim->entry[0] = cpu_to_le16(set ? (aid | 0x8000) : aid);
 272         p54_tx(priv, skb);
 273         return 0;
 274 }
 275
 276 int p54_sta_unlock(struct p54_common *priv, u8 *addr)
 277 {
 278         struct sk_buff *skb;
 279         struct p54_sta_unlock *sta;
 280
 281         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*sta),
 282                             P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
 283         if (unlikely(!skb))
 284                 return -ENOMEM;
 285
 286         sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
 287         memcpy(sta->addr, addr, ETH_ALEN);
 288         p54_tx(priv, skb);
 289         return 0;
 290 }
 291
 292 int p54_tx_cancel(struct p54_common *priv, __le32 req_id)
 293 {
 294         struct sk_buff *skb;
 295         struct p54_txcancel *cancel;
 296         u32 _req_id = le32_to_cpu(req_id);
 297
 298         if (unlikely(_req_id < priv->rx_start || _req_id > priv->rx_end))
 299                 return -EINVAL;
 300
 301         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*cancel),
 302                             P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
 303         if (unlikely(!skb))
 304                 return -ENOMEM;
 305
 306         cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
 307         cancel->req_id = req_id;
 308         p54_tx(priv, skb);
 309         return 0;
 310 }
 311
 312 int p54_setup_mac(struct p54_common *priv)
 313 {
 314         struct sk_buff *skb;
 315         struct p54_setup_mac *setup;
 316         u16 mode;
 317
 318         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup),
 319                             P54_CONTROL_TYPE_SETUP, GFP_ATOMIC);
 320         if (!skb)
 321                 return -ENOMEM;
 322
 323         setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
 324         if (!(priv->hw->conf.flags & IEEE80211_CONF_IDLE)) {
 325                 switch (priv->mode) {
 326                 case NL80211_IFTYPE_STATION:
 327                         mode = P54_FILTER_TYPE_STATION;
 328                         break;
 329                 case NL80211_IFTYPE_AP:
 330                         mode = P54_FILTER_TYPE_AP;
 331                         break;
 332                 case NL80211_IFTYPE_ADHOC:
 333                 case NL80211_IFTYPE_MESH_POINT:
 334                         mode = P54_FILTER_TYPE_IBSS;
 335                         break;
 336                 case NL80211_IFTYPE_MONITOR:
 337                         mode = P54_FILTER_TYPE_PROMISCUOUS;
 338                         break;
 339                 default:
 340                         mode = P54_FILTER_TYPE_HIBERNATE;
 341                         break;
 342                 }
 343
 344                 /*
 345                  * "TRANSPARENT and PROMISCUOUS are mutually exclusive"
 346                  * STSW45X0C LMAC API - page 12
 347                  */
 348                 if (((priv->filter_flags & FIF_PROMISC_IN_BSS) ||
 349                      (priv->filter_flags & FIF_OTHER_BSS)) &&
 350                     (mode != P54_FILTER_TYPE_PROMISCUOUS))
 351                         mode |= P54_FILTER_TYPE_TRANSPARENT;
 352         } else {
 353                 mode = P54_FILTER_TYPE_HIBERNATE;
 354         }
 355
 356         setup->mac_mode = cpu_to_le16(mode);
 357         memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
 358         memcpy(setup->bssid, priv->bssid, ETH_ALEN);
 359         setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */
 360         setup->rx_align = 0;
 361         if (priv->fw_var < 0x500) {
 362                 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 363                 memset(setup->v1.rts_rates, 0, 8);
 364                 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
 365                 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
 366                 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
 367                 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
 368                 setup->v1.unalloc0 = cpu_to_le16(0);
 369         } else {
 370                 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
 371                 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
 372                 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
 373                 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
 374                 setup->v2.truncate = cpu_to_le16(48896);
 375                 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 376                 setup->v2.sbss_offset = 0;
 377                 setup->v2.mcast_window = 0;
 378                 setup->v2.rx_rssi_threshold = 0;
 379                 setup->v2.rx_ed_threshold = 0;
 380                 setup->v2.ref_clock = cpu_to_le32(644245094);
 381                 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
 382                 setup->v2.osc_start_delay = cpu_to_le16(65535);
 383         }
 384         p54_tx(priv, skb);
 385         return 0;
 386 }
 387
 388 int p54_scan(struct p54_common *priv, u16 mode, u16 dwell)
 389 {
 390         struct sk_buff *skb;
 391         struct p54_hdr *hdr;
 392         struct p54_scan_head *head;
 393         struct p54_iq_autocal_entry *iq_autocal;
 394         union p54_scan_body_union *body;
 395         struct p54_scan_tail_rate *rate;
 396         struct pda_rssi_cal_entry *rssi;
 397         unsigned int i;
 398         void *entry;
 399         int band = priv->hw->conf.channel->band;
 400         __le16 freq = cpu_to_le16(priv->hw->conf.channel->center_freq);
 401
 402         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*head) +
 403                             2 + sizeof(*iq_autocal) + sizeof(*body) +
 404                             sizeof(*rate) + 2 * sizeof(*rssi),
 405                             P54_CONTROL_TYPE_SCAN, GFP_ATOMIC);
 406         if (!skb)
 407                 return -ENOMEM;
 408
 409         head = (struct p54_scan_head *) skb_put(skb, sizeof(*head));
 410         memset(head->scan_params, 0, sizeof(head->scan_params));
 411         head->mode = cpu_to_le16(mode);
 412         head->dwell = cpu_to_le16(dwell);
 413         head->freq = freq;
 414
 415         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 416                 __le16 *pa_power_points = (__le16 *) skb_put(skb, 2);
 417                 *pa_power_points = cpu_to_le16(0x0c);
 418         }
 419
 420         iq_autocal = (void *) skb_put(skb, sizeof(*iq_autocal));
 421         for (i = 0; i < priv->iq_autocal_len; i++) {
 422                 if (priv->iq_autocal[i].freq != freq)
 423                         continue;
 424
 425                 memcpy(iq_autocal, &priv->iq_autocal[i].params,
 426                        sizeof(struct p54_iq_autocal_entry));
 427                 break;
 428         }
 429         if (i == priv->iq_autocal_len)
 430                 goto err;
 431
 432         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW)
 433                 body = (void *) skb_put(skb, sizeof(body->longbow));
 434         else
 435                 body = (void *) skb_put(skb, sizeof(body->normal));
 436
 437         for (i = 0; i < priv->output_limit->entries; i++) {
 438                 __le16 *entry_freq = (void *) (priv->output_limit->data +
 439                                      priv->output_limit->entry_size * i);
 440
 441                 if (*entry_freq != freq)
 442                         continue;
 443
 444                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 445                         memcpy(&body->longbow.power_limits,
 446                                (void *) entry_freq + sizeof(__le16),
 447                                priv->output_limit->entry_size);
 448                 } else {
 449                         struct pda_channel_output_limit *limits =
 450                                (void *) entry_freq;
 451
 452                         body->normal.val_barker = 0x38;
 453                         body->normal.val_bpsk = body->normal.dup_bpsk =
 454                                 limits->val_bpsk;
 455                         body->normal.val_qpsk = body->normal.dup_qpsk =
 456                                 limits->val_qpsk;
 457                         body->normal.val_16qam = body->normal.dup_16qam =
 458                                 limits->val_16qam;
 459                         body->normal.val_64qam = body->normal.dup_64qam =
 460                                 limits->val_64qam;
 461                 }
 462                 break;
 463         }
 464         if (i == priv->output_limit->entries)
 465                 goto err;
 466
 467         entry = (void *)(priv->curve_data->data + priv->curve_data->offset);
 468         for (i = 0; i < priv->curve_data->entries; i++) {
 469                 if (*((__le16 *)entry) != freq) {
 470                         entry += priv->curve_data->entry_size;
 471                         continue;
 472                 }
 473
 474                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 475                         memcpy(&body->longbow.curve_data,
 476                                 (void *) entry + sizeof(__le16),
 477                                 priv->curve_data->entry_size);
 478                 } else {
 479                         struct p54_scan_body *chan = &body->normal;
 480                         struct pda_pa_curve_data *curve_data =
 481                                 (void *) priv->curve_data->data;
 482
 483                         entry += sizeof(__le16);
 484                         chan->pa_points_per_curve = 8;
 485                         memset(chan->curve_data, 0, sizeof(*chan->curve_data));
 486                         memcpy(chan->curve_data, entry,
 487                                sizeof(struct p54_pa_curve_data_sample) *
 488                                min((u8)8, curve_data->points_per_channel));
 489                 }
 490                 break;
 491         }
 492         if (i == priv->curve_data->entries)
 493                 goto err;
 494
 495         if ((priv->fw_var >= 0x500) && (priv->fw_var < 0x509)) {
 496                 rate = (void *) skb_put(skb, sizeof(*rate));
 497                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 498                 for (i = 0; i < sizeof(rate->rts_rates); i++)
 499                         rate->rts_rates[i] = i;
 500         }
 501
 502         rssi = (struct pda_rssi_cal_entry *) skb_put(skb, sizeof(*rssi));
 503         rssi->mul = cpu_to_le16(priv->rssical_db[band].mul);
 504         rssi->add = cpu_to_le16(priv->rssical_db[band].add);
 505         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 506                 /* Longbow frontend needs ever more */
 507                 rssi = (void *) skb_put(skb, sizeof(*rssi));
 508                 rssi->mul = cpu_to_le16(priv->rssical_db[band].longbow_unkn);
 509                 rssi->add = cpu_to_le16(priv->rssical_db[band].longbow_unk2);
 510         }
 511
 512         if (priv->fw_var >= 0x509) {
 513                 rate = (void *) skb_put(skb, sizeof(*rate));
 514                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 515                 for (i = 0; i < sizeof(rate->rts_rates); i++)
 516                         rate->rts_rates[i] = i;
 517         }
 518
 519         hdr = (struct p54_hdr *) skb->data;
 520         hdr->len = cpu_to_le16(skb->len - sizeof(*hdr));
 521
 522         p54_tx(priv, skb);
 523         return 0;
 524
 525 err:
 526         printk(KERN_ERR "%s: frequency change to channel %d failed.\n",
 527                wiphy_name(priv->hw->wiphy), ieee80211_frequency_to_channel(
 528                priv->hw->conf.channel->center_freq));
 529
 530         dev_kfree_skb_any(skb);
 531         return -EINVAL;
 532 }
 533
 534 int p54_set_leds(struct p54_common *priv)
 535 {
 536         struct sk_buff *skb;
 537         struct p54_led *led;
 538
 539         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led),
 540                             P54_CONTROL_TYPE_LED, GFP_ATOMIC);
 541         if (unlikely(!skb))
 542                 return -ENOMEM;
 543
 544         led = (struct p54_led *) skb_put(skb, sizeof(*led));
 545         led->flags = cpu_to_le16(0x0003);
 546         led->mask[0] = led->mask[1] = cpu_to_le16(priv->softled_state);
 547         led->delay[0] = cpu_to_le16(1);
 548         led->delay[1] = cpu_to_le16(0);
 549         p54_tx(priv, skb);
 550         return 0;
 551 }
 552
 553 int p54_set_edcf(struct p54_common *priv)
 554 {
 555         struct sk_buff *skb;
 556         struct p54_edcf *edcf;
 557
 558         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf),
 559                             P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC);
 560         if (unlikely(!skb))
 561                 return -ENOMEM;
 562
 563         edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
 564         if (priv->use_short_slot) {
 565                 edcf->slottime = 9;
 566                 edcf->sifs = 0x10;
 567                 edcf->eofpad = 0x00;
 568         } else {
 569                 edcf->slottime = 20;
 570                 edcf->sifs = 0x0a;
 571                 edcf->eofpad = 0x06;
 572         }
 573         /* (see prism54/isl_oid.h for further details) */
 574         edcf->frameburst = cpu_to_le16(0);
 575         edcf->round_trip_delay = cpu_to_le16(0);
 576         edcf->flags = 0;
 577         memset(edcf->mapping, 0, sizeof(edcf->mapping));
 578         memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
 579         p54_tx(priv, skb);
 580         return 0;
 581 }
 582
 583 int p54_set_ps(struct p54_common *priv)
 584 {
 585         struct sk_buff *skb;
 586         struct p54_psm *psm;
 587         unsigned int i;
 588         u16 mode;
 589
 590         if (priv->hw->conf.flags & IEEE80211_CONF_PS &&
 591             !priv->powersave_override)
 592                 mode = P54_PSM | P54_PSM_BEACON_TIMEOUT | P54_PSM_DTIM |
 593                        P54_PSM_CHECKSUM | P54_PSM_MCBC;
 594         else
 595                 mode = P54_PSM_CAM;
 596
 597         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm),
 598                             P54_CONTROL_TYPE_PSM, GFP_ATOMIC);
 599         if (!skb)
 600                 return -ENOMEM;
 601
 602         psm = (struct p54_psm *)skb_put(skb, sizeof(*psm));
 603         psm->mode = cpu_to_le16(mode);
 604         psm->aid = cpu_to_le16(priv->aid);
 605         for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
 606                 psm->intervals[i].interval =
 607                         cpu_to_le16(priv->hw->conf.listen_interval);
 608                 psm->intervals[i].periods = cpu_to_le16(1);
 609         }
 610
 611         psm->beacon_rssi_skip_max = 200;
 612         psm->rssi_delta_threshold = 0;
 613         psm->nr = 1;
 614         psm->exclude[0] = WLAN_EID_TIM;
 615
 616         p54_tx(priv, skb);
 617         return 0;
 618 }
 619
 620 int p54_init_xbow_synth(struct p54_common *priv)
 621 {
 622         struct sk_buff *skb;
 623         struct p54_xbow_synth *xbow;
 624
 625         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow),
 626                             P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL);
 627         if (unlikely(!skb))
 628                 return -ENOMEM;
 629
 630         xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
 631         xbow->magic1 = cpu_to_le16(0x1);
 632         xbow->magic2 = cpu_to_le16(0x2);
 633         xbow->freq = cpu_to_le16(5390);
 634         memset(xbow->padding, 0, sizeof(xbow->padding));
 635         p54_tx(priv, skb);
 636         return 0;
 637 }
 638
 639 int p54_upload_key(struct p54_common *priv, u8 algo, int slot, u8 idx, u8 len,
 640                    u8 *addr, u8* key)
 641 {
 642         struct sk_buff *skb;
 643         struct p54_keycache *rxkey;
 644
 645         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey),
 646                             P54_CONTROL_TYPE_RX_KEYCACHE, GFP_KERNEL);
 647         if (unlikely(!skb))
 648                 return -ENOMEM;
 649
 650         rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
 651         rxkey->entry = slot;
 652         rxkey->key_id = idx;
 653         rxkey->key_type = algo;
 654         if (addr)
 655                 memcpy(rxkey->mac, addr, ETH_ALEN);
 656         else
 657                 memset(rxkey->mac, ~0, ETH_ALEN);
 658
 659         switch (algo) {
 660         case P54_CRYPTO_WEP:
 661         case P54_CRYPTO_AESCCMP:
 662                 rxkey->key_len = min_t(u8, 16, len);
 663                 memcpy(rxkey->key, key, rxkey->key_len);
 664                 break;
 665
 666         case P54_CRYPTO_TKIPMICHAEL:
 667                 rxkey->key_len = 24;
 668                 memcpy(rxkey->key, key, 16);
 669                 memcpy(&(rxkey->key[16]), &(key
 670                         [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
 671                 break;
 672
 673         case P54_CRYPTO_NONE:
 674                 rxkey->key_len = 0;
 675                 memset(rxkey->key, 0, sizeof(rxkey->key));
 676                 break;
 677
 678         default:
 679                 printk(KERN_ERR "%s: invalid cryptographic algorithm: %d\n",
 680                        wiphy_name(priv->hw->wiphy), algo);
 681                 dev_kfree_skb(skb);
 682                 return -EINVAL;
 683         }
 684
 685         p54_tx(priv, skb);
 686         return 0;
 687 }
 688
 689 int p54_fetch_statistics(struct p54_common *priv)
 690 {
 691         struct ieee80211_tx_info *txinfo;
 692         struct p54_tx_info *p54info;
 693         struct sk_buff *skb;
 694
 695         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL,
 696                             sizeof(struct p54_statistics),
 697                             P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
 698         if (!skb)
 699                 return -ENOMEM;
 700
 701         /*
 702          * The statistic feedback causes some extra headaches here, if it
 703          * is not to crash/corrupt the firmware data structures.
 704          *
 705          * Unlike all other Control Get OIDs we can not use helpers like
 706          * skb_put to reserve the space for the data we're requesting.
 707          * Instead the extra frame length -which will hold the results later-
 708          * will only be told to the p54_assign_address, so that following
 709          * frames won't be placed into the  allegedly empty area.
 710          */
 711         txinfo = IEEE80211_SKB_CB(skb);
 712         p54info = (void *) txinfo->rate_driver_data;
 713         p54info->extra_len = sizeof(struct p54_statistics);
 714
 715         p54_tx(priv, skb);
 716         return 0;
 717 }